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MEXICOWANDERER's avatar
Sep 30, 2017

Allison Transmission Goes Even More Nuts cut n paste

Allison plans 9-speed automatic transmission for release in 2020
Jeff Crissey
| @JeffCrisseyCCJ
| September 27, 2017
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Allison Transmission's 9-speed automatic transmissionAllison Transmission announced it will release a nine-speed fully automatic transmission for medium- and heavy-duty vehicle markets around the globe by 2020, ahead of the U.S. Environmental Protection Agency and National Highway Traffic Safety Administration’s Phase 2 greenhouse gas and fuel efficiency standards.

The new transmission is the successor to Allison’s 2000 Series six-speed automatic transmission and uses the same interface as its predecessor. According to Randy Kirk, Allison’s senior vice president of product engineering and product teams, says the new Allison 9-Speed can achieve 7 percent greater fuel efficiency than Allison’s base six-speed model.

“This is the first in a number of new products we’ll develop to meet the global challenge of increased fuel efficiency and reduced greenhouse gas emissions,” Kirk said during a press conference at the North American Commercial Vehicle Show in Atlanta.

The control system builds on Allison’s xFE (Extra Fuel Economy) and FuelSense 2.0 with DynActive shifting features, “incorporating learning algorithms to establish new benchmarks and finding a balance between fuel economy and performance,” said Kirk.

The Allison 9-Speed features a deep first gear ratio to allow the engine to run at lower speeds sooner to improve fuel savings and a torque converter lock-up in first gear. A new engine stop-start system provides immediate transmission engagement and vehicle hold while the engine is restarted. The new transmission is aimed specifically at Class 3-7 commercial vehicles, particularly in distribution, rental/lease and school bus segments, said Kirk
  • free radical wrote:
    Btw did you know that Internal combustion engine is about 25% - 35% efficient while Electric one is 99%..
    Can you do the math on how much % of every gallon fuel is wasted in your vehicle and how dirty it makes air around us..


    An electric motor is 99% efficient. Creating, and getting, the electric power to millions of those electric motors powering vehicles all over the planet will be far from efficient. Until a 55 gallon gas tank sized battery can carry my heavy motorhome around 500 miles over hill and dale while also running an air conditioner and headlights and then be recharged at hundreds of thousands of places in 15 minutes ... I will not be impressed merely by an electric motor's conversion efficiency.

    In my earlier post above I did say that neither batteries nor fossil fuel should be the final "personal transportation for general use" power solution.

    If anyone wants to dispute MEXICOWANDERER's world-wide electric power generation and distribution comments relative to the difficulties/impossibilities of powering vehicles on a world-wide scale .... please have it in a point by point rebuttal.
  • Even if full electric is a long way off for heavy hauling... an electric hybrid can still go a long way toward energy efficiency and reducing the use of petroleum.

    IMO the electric econobox like Prius is a bit overrated. Far more savings to be had with large SUVs and trucks.

    Plenty of solar power to power all the cars electric. Solar is growing and accelerating. I am fascinated watching it progress.

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